Does BNSF Railway Drug Test?

Drug Testing by Position

Drug Test Type and Process

BNSF is well known among railroad applicants for using a hair follicle drug test at the pre-employment stage, in addition to the federally required DOT screening. The hair test detects drug use over roughly the previous 90 days — far longer than a urine test's window of a few days to a few weeks. Hair specimens can be collected from the head or, if needed, from body hair, and can be taken from several locations to gather enough sample; you cannot advance in the process without providing an adequate specimen. Some BNSF locations and roles also require a urine analysis. The DOT-regulated portion is a 5-panel screen covering marijuana, cocaine, amphetamines/methamphetamine, opioids, and PCP. After hire into covered service, employees face unannounced FRA random testing (urine and breath), post-accident testing, reasonable-suspicion testing, and follow-up testing after any violation.

Marijuana Policy

BNSF enforces zero tolerance for marijuana, and its hair follicle test makes the policy especially strict because THC can be detectable in hair for about 90 days after use. Since railroad safety-sensitive positions are federally regulated by the FRA and DOT, marijuana remains prohibited even in states that have legalized recreational or medical cannabis. A state medical-marijuana card is not a valid explanation for a positive result, and CBD, hemp, and Delta-8 products are risky because they can contain enough THC to trigger a failure. A positive pre-employment test results in a rejected application and a waiting period before you can reapply. For current employees, a confirmed positive is a serious rule violation that can lead to dismissal, with return only through DOT return-to-duty procedures.

Tips for Applicants

Because BNSF uses hair testing with a ~90-day lookback, timing matters more than it does at companies that only test urine — plan to be fully clean for at least three months before applying. Do not rely on same-week abstinence, and avoid CBD, hemp, and Delta-8 products entirely, since they can produce a positive you cannot dispute. If you take a legitimate prescription that could show up (such as amphetamine-based ADHD medication or prescribed opioids), be ready to document it for the Medical Review Officer. Bring valid photo ID to your collection appointment, and understand that you cannot progress without giving an adequate hair specimen, so do not shave all body and head hair beforehand. Apply through the official BNSF careers site and complete each pre-employment step promptly to keep your start date on track.

Frequently Asked Questions

Does BNSF drug test for weed?

Yes. BNSF tests for marijuana (THC) and enforces zero tolerance. Its pre-employment hair follicle test can detect THC for about 90 days. Because railroad safety-sensitive jobs are federally regulated, marijuana is prohibited even where it is legal, and a medical card will not excuse a positive result.

Does BNSF do a hair follicle test?

Yes. BNSF is known for using a hair follicle test at the pre-employment stage, detecting drug use over roughly the past 90 days. Hair can be collected from the head or body, and your application cannot proceed without an adequate specimen. Some locations also use a urine test.

How far back does the BNSF drug test go?

The BNSF hair follicle test looks back approximately 90 days. That is a much longer detection window than a standard urine test, which typically covers only a few days to a few weeks of recent use.

Does BNSF do random drug testing?

Yes. Employees in covered, safety-sensitive service are subject to unannounced FRA random drug (urine) and alcohol (breath) testing throughout their employment, plus post-accident, reasonable-suspicion, and return-to-duty testing.

What drugs does the BNSF test screen for?

The DOT-regulated screen covers marijuana, cocaine, amphetamines/methamphetamine, opioids, and PCP. BNSF's hair follicle test screens for illegal and illicit drug use over the past ~90 days, and some roles also include a urine analysis.

Can I fail the BNSF drug test with CBD?

Yes, it is possible. CBD, hemp, and Delta-8 products can contain enough THC to cause a positive result, and because BNSF uses hair testing, that THC can be detectable for months. There is no valid dispute for a THC positive in a federally regulated railroad job, so avoid these products entirely.